XYplorer Beta Club

Is there a way to incorporate a image viewer such as InView or ACDSee into XYplorer to preview images that are not what XYplorer can accept internally ?

Sure, you can create as many PFA's for a filetype as you like and the first matching one is used on a dbl-click, while the other ones can be accessed with the PFA toolbar button.

What do you mean by PFA's ?
What your saying is I can install ACDSee or InView etc, using a program similar to those mentioned, preview thumbnails in XY of any extension with MDBU ? That would mean that XY would have to silently have a connection with the other program, correct ?

PFA = Portable File Association, which open specific file type with specific program regardless which default Windows' program is.
Tool > Customize File Association
then have some thing like this:
"Image eye" ani;bmp;gif;ico;jpe;jpeg;jpg;pcx;png;psd;tga;tif;tiff;wmf>E:\4Media\Image Eye\Image Eye.exe

So, Image Eye will open pictures.

XYplorer use Windows Shell to preview pictures (generate thumbnail and MDBU)

XY will use the other program to generate the thumbnails, other the while, MDBU will work. I hope this works

I install XnView, setup PFA with the following path; "XnView" psd;hdr>C:\Program Files(x86)\XnView\xnview.exe\
Not working ?

Remove the backslash at the end:

But there's no interconnection between XY and the other programs you start via PFA whatsoever!
It's just an easy way to open other apps with specific filetypes.

So MDBU within XY won't suddenly start working with filetypes it's not able to preview, neither will the thumbs be made availabe, AFAIK.

Oh ! There was a misunderstanding
Thanks, I'll have to move onto Plan B